Dungeon IQ
Dungeon IQ is a mechanic introduced in No Heroes Allowed!. It dictates various abilities monsters can perform, such as allowing Omnoms to make Anthills. Increased IQ also allows for the spawning of monsters like Supremanoids.
Overview
The Water Lily is a pivotal part of increasing a dungeon's IQ, requiring multiple to achieve the maximum level. They must be maintained by giving them nutrients every so often, as well as kept away from Maras which may feed on the buds as they grow.
As IQ increases, monsters will begin to engage in unique behaviours to display their intelligence. Slimemosses will use spores to reproduce more effectively, Omnoms will build Anthills to block corridors and impede Heroes, Lizardmen will make Totem Poles to electrocute Heroes and defend themselves, and so on. These can drastically improve Badman's defenses and make it much more difficult for a hero to win.